Characteristics of Life 1-1

True/False

Indicate whether the statement is true or false.

____ 1. All the changes that organisms undergo as they grow are called growth.

____ 2. A stimulus causes a change or response in an organism.

____ 3. Nonliving things can have some characteristics of life.

____ 4. A unicellular organism grows by increasing its number of cells.

____ 5. Contractile vacuoles help paramecium reproduce.

Multiple Choice

Identify the choice that best completes the statement or answers the question. Write the letter of your choice on the blank line.

____ 1. Which of the following is NOT a multicellular organism?

a. / grass / c. / mosquito
b. / amoeba / d. / worm

____ 2. A tadpole turns into a frog over its lifetime. This is called _____.

a. / growth / c. / homeostasis
b. / development / d. / reproduction

____ 3. Two dogs mate and produce a puppy. This is an example of _____.

a. / growth / c. / homeostasis
b. / development / d. / reproduction

____ 4. Which of the following is an example of a response to stimulus?

a. / you are tired / c. / you eat food
b. / you are hot / d. / you are scared

____ 5. For a plant, sunlight is an example of _____.

a. / internal stimulus / c. / homeostasis
b. / external stimulus / d. / reproduction

____ 6. Which of the following is NOT a method your body automatically uses to regulate homeostasis?

a. / taking a cool shower / c. / shivering
b. / sweating / d. / change the flow of blood

____ 7. Growth of multicellular organisms is mostly due to an increase in the ____ of cells.

a. / size / c. / number
b. / protons / d. / all of the above

Refer to the figure for the following questions.

____ 8. Which organism gets its energy directly from the Sun?

a. / ants / c. / pronghorn
b. / longnose snake / d. / desert paintbrush

____ 9. The mountain lion gets its energy from _____.

a. / ants / c. / pronghorn
b. / longnose snake / d. / desert paintbrush

____ 10. From which food does the Golden Mantled Squirrel get its energy?

a. / badger / c. / pronghorn
b. / longnose snake / d. / desert paintbrush

Completion

Complete each statement.

1. Living things need ______for sleeping, thinking, eating and moving.

2. Anything an organism responds to is a(n) ______.

3. The ability to remain stable is called ______.

4. The smallest units of life are known as ______.

5. Another term for living things is ______.

6. The reaction to a stimulus is called a ______.

Characteristics of Life 1-1

Answer Section

TRUE/FALSE

1. ANS: F

Changes that occur in an organism during its lifetime are called development.

PTS: 1 DIF: Bloom's Level 1 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.8.B.1 | 5.3.8.D.3

2. ANS: T PTS: 1 DIF: Bloom's Level 1 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.8.B.1

3. ANS: T PTS: 1

4. ANS: F PTS: 1

5. ANS: F PTS: 1

MULTIPLE CHOICE

1. ANS: B

An amoeba is a unicellular organism. Grass, mosquitos, and worms are multicellular organisms.

PTS: 1 DIF: Bloom's Level 2 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.8.A.1

2. ANS: B

The cells in a tadpole become specialized into different cell types as the tadpole develops into a frog.

PTS: 1 DIF: Bloom's Level 1 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.8.B.1

3. ANS: D

Reproduction is the process by which organisms make one or more new organisms.

PTS: 1 DIF: Bloom's Level 2 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.8.A.1

4. ANS: C

Being tired, hot, or scared are stimuli. How you react to stimulus, by eating food, is a response.

PTS: 1 DIF: Bloom's Level 3 | DOK 2-MOD

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1

5. ANS: B

The light is outside of the plant so this is an example of an external stimulus.

PTS: 1 DIF: Bloom's Level 3 | DOK 2-MOD

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1

6. ANS: A

Taking a cool shower is a choice you make, not a method your body uses.

PTS: 1 DIF: Bloom's Level 2 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1

7. ANS: C

Some multicellular organisms only have a few cells, but others have trillions of cells.

PTS: 1 DIF: Bloom's Level 1 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.8.A.1

8. ANS: D

Each of the insects and animals get their energy from other animals or plants. Only the plants get their energy directly from the Sun.

PTS: 1 DIF: Bloom's Level 2 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.6.C.2 | 5.3.6.C.3 | 5.1.8.B.2

9. ANS: C

The mountain lion eats the pronghorn.

PTS: 1 DIF: Bloom's Level 2 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.6.C.2 | 5.3.8.A.1

10. ANS: D

Plants are the only food that the diagram shows for the squirrel.

PTS: 1 DIF: Bloom's Level 2 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.6.C.2 | 5.3.6.C.3 | 5.1.8.B.2

COMPLETION

1. ANS: energy

PTS: 1 DIF: Bloom's Level 1 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.6.C.2

2. ANS: stimulus

PTS: 1 DIF: Bloom's Level 1 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1

3. ANS: homeostasis

PTS: 1 DIF: Bloom's Level 1 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1

4. ANS: cells

PTS: 1 DIF: Bloom's Level 1 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.6.A.2

5. ANS: organisms

PTS: 1 DIF: Bloom's Level 1 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1 STA: 5.3.6.A.2 | 5.3.8.A.1 | 5.3.6.C.2

6. ANS: response

PTS: 1 DIF: Bloom's Level 2 | DOK 1-LOW

REF: To review this topic refer to Classifying and Exploring Life: Lesson 1

OBJ: 1-1